Diffusion of the atomic clusters over the (111) and(100) surfaces in Ni crystal

Полетаев, Г. М.; Kaygorodova, Valentina M.; Elli, Georgy; Uzhakina, O. M.; Baimova, Julia A.

doi:10.22226/2410-3535-2014-4-218-221

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…An increase in activation energy with increasing cluster size is typical, not only Previously [8], it was shown that, at a constant temperature, the activation energy is higher when larger clusters participate in the viscous flow of a liquid. An increase in activation energy with increasing cluster size is typical, not only for viscous fluid flow, but for other transport phenomena [28][29][30]. Thus, when heated in a low-temperature region with the lowest activation energy, small clusters contribute to the viscous flow of the melt.…”

Section: Resultsmentioning

confidence: 99%

“…The electronegativity of aluminum on the Luo-Benson scale is 2.40 and is midway between iron and boron. Therefore, aluminum atoms attract both iron atoms and boron atoms with the formation of clusters, based on the stable ternary phase Fe 2 AlB 2 [29,30] with high formation energy (see Table 2) or higher-order metastable phases Fe 3 AlB 4 and Fe 4 AlB 6 [33].…”

Section: Resultsmentioning

confidence: 99%

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Melting, Solidification, and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys with Low Aluminum Addition

Starodubtsev,

Tsepelev,

Konashkov

et al. 2024

Materials

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Melting, solidification, and viscosity properties of multicomponent Fe-Cu-Nb-Mo-Si-B alloys with low aluminum addition (up to 0.42 at.% Al) were studied using an oscillating cup viscometer. It is shown that melting and solidification are divided into two stages with a knee point at 1461 K. The temperature dependences of the liquid fraction between the liquidus and solidus temperatures during melting and solidification are calculated. It has been proven that aluminum accelerates the processes of melting and solidification and leads to an increase in liquidus and solidus temperatures. In the liquid state at temperatures above 1700 K in an alloy with a low aluminum content, the activation energy of viscous flow increases. This growth was associated with the liquid–liquid structure transition, caused by the formation of large clusters based on the metastable Fe23B6 phase. Aluminum atoms attract iron and boron atoms and contribute to the formation of clusters based on the Fe2AlB2 phase and metastable phases of a higher order.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Melting, Solidification, and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys with Low Aluminum Addition

Starodubtsev,

Tsepelev,

Konashkov

et al. 2024

Materials

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show abstract

“…These results imply that (111) orientation would be a preferred growth direction if no additional energy is provided to the deposited atoms. In addition, Poletaev et al have also indicated that the activation energy for the migration for Ni atoms in (100) plane is multiple times higher than in (111) plane [31]. Both silver and nickel are transition metals and have FCC crystal structure.…”

Section: Characterizationsmentioning

confidence: 99%

Ultra-thin silver films grown by sputtering with a soft ion beam-treated intermediate layer

Tran

Wang

Shrestha

et al. 2023

J. Phys. D: Appl. Phys.

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Silver thin films have wide-ranging applications in optical coatings and optoelectronic devices. However, their poor wettability to substrates such as glass often leads to an island growth mode, known as the Volmer-Weber mode. This study demonstrates a method that utilizes a low-energy ion beam treatment in conjunction with magnetron sputtering to fabricate continuous silver films as thin as 6 nm. A single-beam ion source generates low-energy soft ions to establish a nominal 1 nm seed silver layer, which significantly enhances the wettability of the subsequently deposited silver films, resulting in a continuous film of approximately 6 nm with a resistivity as low as 11.4 µΩ.cm. The transmittance spectra of these films were found to be comparable to simulated results, and the standard 100-grid tape test showed a marked improvement in adhesion to glass compared to silver films sputter-deposited without the ion beam treatment. High-resolution scanning electron microscopy images of the early growth stage indicate that the ion beam treatment promotes nucleation, while films without the ion beam treatment tend to form isolated islands. X-ray diffraction patterns indicate that the (111) crystallization is suppressed by the soft ion beam treatment, while growth of large crystals with (200) orientation is strengthened. This method is a promising approach for the fabrication of silver thin films with improved properties for use in optical coatings and optoelectronics.

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Melting, Solidification and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys With Low Aluminum Addition

Starodubtsev,

Tsepelev,

Konashkov

et al. 2024

Preprint

View full text Add to dashboard Cite

Melting, solidification and viscosity properties of a multicomponent Fe-Cu-Nb-Mo-Si-B alloys with low aluminum addition up to 0.42 at.% Al were studied using an oscillating cup viscometer. It is shown that melting and solidification are divided into two stages with a knee point at 1461 K. The temperature dependences of the liquid fraction between the liquidus and solidus temperatures during melting and solidification are calculated. It has been proven that aluminum accelerates the processes of melting and solidification and leads to an increase in liquidus and solidus temperatures. In the liquid state at temperatures above 1700 K in an alloy with a low aluminum content, the activation energy of viscous flow increases. This growth was associated with the liquid – liquid structure transition caused by the formation of large clusters based on the metastable Fe23B6 phase. Aluminum atoms attract iron and boron atoms and contribute to the formation of clusters based on the Fe2AlB2 phase and metastable phases of a higher order.

show abstract

Diffusion of the atomic clusters over the (111) and(100) surfaces in Ni crystal

Cited by 3 publications

References 7 publications

Melting, Solidification, and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys with Low Aluminum Addition

Melting, Solidification, and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys with Low Aluminum Addition

Ultra-thin silver films grown by sputtering with a soft ion beam-treated intermediate layer

Melting, Solidification and Viscosity Properties of Multicomponent Fe-Cu-Nb-Mo-Si-B Alloys With Low Aluminum Addition

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